Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1efe3919a34ae6…

MALICIOUS

PDF

35.7 KB Created: 2021-07-09 20:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 31f27e65f2bca16659a6e68b1f29d37b SHA-1: e282fcf3391edc28a0c259aabdc4fa9b94ba31c7 SHA-256: 5a1efe3919a34ae6aa09cb963d3bc15d7a3876a344494ba791f992f0cd04c0c3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into clicking a malicious URL. The primary link, http://netcdn.tw/app/406889139/comapp-trekfree-coin-spindaily-link-master-game-hack, is presented as a generator for in-game currency or hacks. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attempt to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/comapp-trekfree-coin-spindaily-link-master-game-hack PDF link annotation
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-peoples-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/inspect-element-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/hacks-for-dungeon-quest-roblox_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000325b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x325B 23268 bytes
SHA-256: d639b7f0d3afc24888304f097525ead829940b3d0fc67aa2ff05846ca9867162
font_01_sfnt_off00006704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 18868 bytes
SHA-256: 39de1f1495db90603cdd5a0ac641928e5cee84e79cd654bbf7f40d5392528f60

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